source: anuga_validation/analytical solutions/contracting_channel_import_mesh.py @ 7626

Last change on this file since 7626 was 7626, checked in by steve, 13 years ago

Cleaning up directory

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1"""Example of shallow water wave equation analytical solution
2consists of a symmetrical converging frictionless channel.
3
4Specific methods pertaining to the 2D shallow water equation
5are imported from shallow_water
6for use with the generic finite volume framework
7
8   Copyright 2005
9   Christopher Zoppou, Stephen Roberts
10   ANU
11   
12Specific methods pertaining to the 2D shallow water equation
13are imported from shallow_water
14for use with the generic finite volume framework
15
16Conserved quantities are h, uh and vh stored as elements 0, 1 and 2 in the
17numerical vector named conserved_quantities.
18"""
19
20#---------------
21# Module imports
22import sys
23from os import sep
24sys.path.append('..'+sep+'pyvolution')
25
26from shallow_water import Transmissive_boundary, Reflective_boundary, \
27     Dirichlet_boundary
28from shallow_water import Constant_height, Domain
29from pmesh2domain import pmesh_to_domain_instance
30
31#-------
32# Domain
33filename = 'converging_channel_30846.tsh'
34print 'Creating domain from', filename
35domain = pmesh_to_domain_instance(filename, Domain)
36print 'Number of triangles = ', len(domain)
37
38#----------------
39# Order of scheme
40domain.default_order = 2
41domain.smooth = True
42
43#-------------------------------------
44# Provide file name for storing output
45domain.store = True     #Store for visualisation purposes
46domain.format = 'sww'   #Native netcdf visualisation format
47domain.set_name('contracting_channel_second-order')
48
49#----------------------------------------------------------
50# Decide which quantities are to be stored at each timestep
51domain.quantities_to_be_stored = ['stage', 'xmomentum', 'ymomentum']
52
53#------------------------------------------
54# Reduction operation for get_vertex_values             
55#from anuga.pyvolution.util import mean
56#domain.reduction = mean
57
58#------------------------
59# Set boundary Conditions
60tags = {}
61tags['upstream'] = Dirichlet_boundary([0.2, 1.2, 0.0])
62tags['reflective'] = Reflective_boundary(domain) 
63tags['transmissive'] = Transmissive_boundary(domain)
64domain.set_boundary(tags)
65
66#----------------------
67# Set initial condition
68domain.set_quantity('elevation', 0.0)
69domain.set_quantity('stage', 0.2)
70   
71#----------
72# Evolution
73import time
74t0 = time.time()
75for t in domain.evolve(yieldstep = 0.1, finaltime = .2):
76    domain.write_time()
77   
78print 'That took %.2f seconds' %(time.time()-t0)
79
80   
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